Rotary pump



Nov. 6, 1928. 1,690,728

J. F. JAWOROWSKI ROTARY PUMP Filed J e 16, 1927 2 Sheets-Sheet l mi @.32a H N atto: umg

Nov. 6, 1928. 1,690,728

J. F. JAwoRowsKl ROTARY PUMP Filed June 16, 1927 2 Sheets-Sheet 2 Y E Ygnomlov lJ" F, Jaworows KL 35% @sm/Wow s/Mmf.

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Patented Nov. 6, 1928.

UNITED STATES y PAJHENTV OFFICE.

JOSEPH F. JAWOROWSXI, OF CLEVELAND, OHIO, AISSIGNOR, BY MESNEASSIGNMENTS, T JOSEPH F. JAWOROWSKI AND SAMUEL E. DETTELBACH, BOTH OFCLEVELAND,

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ROTARY PUMP.

. Application filed June 16, 1927. Serial No. 199,187.

4 being an improvement-in the pump shown i'. and described in 'myapplication for patent filed January 11, 1926, Serial No. 80,497.`

Thus the present improvement resides more especially in the means forobtaining and maintaining good sealing relations between the workingparts of the pump and for increasing the efficiency and working lifetherey of, and the parts involved are also constructed with a View tosimplifying their production and promoting assembly thereof. The presentpump is also particularly designed and constructed for heavy duty andlarge capacities, and embodies adequate means for preventing leakage atthe driving shaft and for supporting and lubricating the shaft, all ashereinafter shown and described and more particularly pointed out in theclaims.

In the drawings annexed hereto, Fig. 1 is a vertical section centrallythrough the pump transversely of the shaft, and Fig. 2 is a verticalsection of the pump longitudinally of the shaft. Fig. 3 i's a sectionalView, enlarged, of the removable abutment for the pump. Fig. 4 is ahorizontal section of the pump on line 4-4 of Fig. 2. Fig. 5 is ahorizontal section of a part of the pump on line 5--5 of Fig. 2. Fig. 6is a perspective view of the removable holder for the reciprocableabutment blades, and Fig. 7 v is a perspective view of the connectingyoke and bearing member for the reciprocable abutment blades. Fig. 8 isa similar view of the two blades. Fig. 9 is a perspective View of theholder, yoke and blades, assembled, and a sectional view of A a part ofthe rotor member interposed between the blades.

rI he pump comprises an irregular shaped main body 2 having a spreadingbase 3 and flat sides. The central part of this body is substantiallycircular and formed with a round opening or working chamber 4 with' inwhich a rotary driving member 5 is confined. Member 5 is a fixed orintegral part of a drive shaft 6 supported at opposite sides of body 2by bushed bearings 7 7. Each bearing is supported by lateral arms 8-8cast integral with or bolted to a pair of side closure plates or heads 99. Each bearing may contain an oil chamber 10 within which an oilcollecting ring 11 may be suspended from shaft 6, and these bearings arespaced apart from the'v side plates or heads 9 to permit .an ad]ustablepacking gland 12 to be sleeved upon the shaft opposite a .packing ring14 and packing 15 within a recess in the outer side of each side plateor head. Each pack-v forms a part of rotatable member 5. Each' workingspace is in turn divided by a blade or abutment member 19 which issupported 1n a sliding position within a channeled member or holder 20held or fixed immovably within cross slots 21 in each side plate or headopposite drivin member 5, see Fig. 5. The inner end 2210? each blade 19is reduced in thickness or beveled Aon opposite sides to a narrow edgeto eiect linear contact with a flat side of the oblique flange 18 whichoperates as a cam to slide the blade. The bottom edge of each bladerides on the round surface of hub 23 of rotatable member 5, and the topedge of each blade is engaged by a rectangular bar 24 and bridge p1ecewhich extends lengthwise over both blades and spans the flange 18. Theopposite ends of bar 24 are flanged or provided with depending portions25, and the corners of the blades are notched or recessed to receivethese depending portions, thereby confining the blades at their outerends between the depending extremities of the bar or bridge piece. Asmall compression spring 26 is seated within an opening in the outer endof each blade 19, which spring is made relatively long to provide asubstantial support and guide for the blades and said bar. Thus theopposite ends of holder 20 extend beyond the flat sides of body 2 intovertical passages 27-27 in the offset walls 28 of the side plates orheads 9, which passages are connected in open communication with eachother at their upper ends by a round cross port 29 in body 2. Holder 20is a removable part but it is rigidly secured within body 2 when sideplates 9 are bolted to the body. Thus a pair of pins 30-30 extendthrough the upper part of holder 20, which pins have exposed collars31-31 adapted to bear against the inner faces of the side plate, seeFig. 4. A recess of space 32 is also provided transversely in body 2above rotor member 5, which recess or space is divided centrally byholder 20 to provide two separate transfer passages between workingchamber 4 and a pair of intake and outlet ports 33 and 34, respectively,to which supply and delivery pipes 35 and, respectively, may beconnected, see Fig. 1. Holder 20 is in effect a removable division Wallfor the intake and outlet sides of the pump, and it also acts as asupporting guide for the reciprocating blades 19 and their common bar24. The ianner portions of these blades which extend into workingchamber 4 and contact With the oblique wall of rotor 5 serve as movableabutments. Bar 24 rests upon the top edges of the blades, and the sidesand bottom edge of this bar may be channeled or grooved as at 36, seeFig. 7 to permit the fluid under pressure to pass into the channeledpart of the holder on opposite sides of the blades to offset the bindingpressure on the blades. The bar and blades are thereby permitted tofloat or operate more freely, and a constant pressure is also built upand maintained in the vertical passages against the outer ends of theblades and bar whereby the blades are pressed into contact with therotor. The tapering or beveled end edges of the blades reduce the areaof contact to a minimum against the rotor Wall, and inasmuch as only oneside of a part of the blade is exposed tothe pressure an overpressureagainst the square outer edge of each blade is obtained which keeps theblade in tight Working contact with the rotor wall. The pressure againstone side of the blade permits seepage at that side to the verticalpassages containing the outer flat ends of the blades, and a part ofthis seepa e passes underneath the connecting bar W ere notched and tothe opposite side of the bar but only between the depending sides of theholder so that the pressure on one side of the blade is partly oiset bythe pressure on the other side, thereby preventing Aexcessive wear andbind between the parts, especially in a pump of large size and capacity.

What I claim, is

l. A rotary pump, comprising a body having a circular Working chamber, arotor obliquely mounted between the sides of said chamber, a pair ofsliding abutment blades engaging said rotor and subdividing saidchamber, and a channeled holder for said blades rigidly secured withinsaid body opposite said working chamber removable therefrom. v

2. A rotary pump, comprising a body having a round chamber therein, arotor Within said chamber, a pair of sliding abutment blades extendingtransversely of said chamber and engaged with said rotor, a connectingbar for said blades, and a removable holder for said blades and theirconnecting bar.

3. A rotary pump, comprising a body having a main working chamber inwhich a rotary pumping member is confined, together with a pair ofslidable abutment blades, a connecting bar and springs to hold saidblades in Working contact with said rotary member, and a channeledholder removably secured within said body to support and guide saidblades.

4. A rotary pump, comprising a body having a pumping chamber, removableheads on opposite sides of said body, a rotary member obliquely mountedWithin said chamber, a pair of abutment blades at opposite sides of saidrotary member, and a. channeled holder for saidblades removably mountedwithin said body and rigidly held in place by said heads.

5. A rotary pump, comprising a body having a working chamber, a pair ofreciprocat- 1m) ing abutment blades and a rotary member mounted Withinsaid chamber, a channeled holder for said blades having pins extendingtherefrom, and removable closure plates for said chamber adapted to bearagainst said pins to secure said holder within said body.

6. A rotary pump, comprising a chambered body having a rotor therein andslidable abutment members on opposite sides of said rotor,

a connecting bar for said slidable abutment members, and a holderhavingdependingsides confining said bar and blades for joint movementopposite said rotor.

7. A rotary pump, comprising a chambered body, removable closure platesat opposite sides of said body having recesses therein, a rotor memberWithin said chambered body, slidable blades engaging opposite sides ofsaid rotor member, and a channeled holder member for said blades ofgreater length than the width of said body adapted to extend into therecesses in said closure plates to support and guide said plates fulllength thereof in their sliding movements.

8. A rotary pump, comprising a chambered body, a rotor member andslidable Vabutment 'blades Within said body, and a connecting bar Aforsaid blades having fluid transferring spaces open to both sides of theblade and to the pressure side of said pump. 13p

9. A rotary pump, comprising a chambere'd bered body, a. rotor memberand slidable 10 body containing a rotor and slidable abutabutment bladeswithin said body, a connectment blades, and a channeled holder Withining bar for said blades having a notched bear- Which said blades areadapted to operate, ing face for the blades, and a channeled holdhavinga notched bearing part for the top er for said bar and blades removablymountedges of the blades, whereby a communicated within said chamberedbody opposite said 15 ing pressure space is provided Within the rotormember. holder between opposite sides of said blades. In testimonwhereof I aix my signature.

10. A rotary pump, comprising a cham- JO EPH F. JAWOROWSK.

